A highway bridge flatness detection device

Abstract

The application discloses a highway bridge flatness detection equipment, relates to the road surface and bridge deck detection technical field, and comprises a carrier, a detection component and a sensing control component which are installed on the carrier, wherein the carrier comprises a trailer frame, a guide wheel is rotatably installed on the trailer frame, two counterweight boxes are fixedly installed on the trailer frame, two driving wheels are installed on the trailer frame and used for driving the trailer frame to move, and a stability adjusting component is installed at the middle position of the trailer frame; and the detection component is composed of a plurality of pressure sensing mechanisms. The application has the advantages that the pressure of the detection wheel in the moving process is monitored by the pressure sensor, the precision is higher, different road surfaces and bridge decks can be detected, the application range is wider, the detection wheel can be adaptively adjusted in the detection process, and the influence of the friction on the flatness detection is reduced.

Description

Technical Field

[0001] This invention relates to the field of road and bridge deck inspection technology, and in particular to a highway bridge smoothness inspection device. Background Technology

[0002] Highway bridge smoothness testing is a core technical means to assess bridge deck traffic quality, predict structural defects, and guide maintenance and repair. It requires combining macroscopic deviation measurement with microscopic defect identification, covering key areas such as bridge deck pavement, expansion joints, and bridge approach slabs.

[0003] Methods for testing the smoothness of highway bridges can be divided into three categories: manual testing, contact instrument testing, and non-contact instrument testing. Among them, contact instrument testing is the most commonly used method for testing the smoothness of road surfaces and bridge decks. It uses rollers to roll on the road surface and bridge deck, and then uses displacement sensors to detect the elevation of the road surface and bridge deck. However, there are often gravel and other debris on the road surface. When the testing wheel acts on the gravel and debris, it will also be affected by the gravel and debris and will be displaced. In this case, the accuracy of the test results is difficult to guarantee.

[0004] Therefore, CN120425631A discloses a mobile highway engineering quality inspection device and method, which includes a walking support, inspection rollers, a cleaning component, a driving component, an elastic support component, and an alarm component. The walking support is equipped with a walking wheel at its bottom edge, the inspection rollers are located below the walking support, the elastic support component is installed on the bottom wall of the walking support to provide elastic support for the inspection rollers, so that the inspection rollers can move up and down when they roll to the road surface protrusions and depressions, and the alarm component is installed on the side wall of the walking support.

[0005] When the aforementioned mobile highway engineering quality testing device rolls along the road surface to test the road surface smoothness, it can clean up the sand and gravel debris on the road surface in front of the testing roller, thereby avoiding the testing roller from acting on the sand and gravel debris and thus improving the accuracy of the test results.

[0006] However, in practical use, the aforementioned mobile highway engineering quality inspection devices and existing inspection devices suffer from several drawbacks. The angle of the inspection rollers changes passively through friction with the ground, leading to increased compression and affecting the accuracy of flatness inspection at bends. For arched bridge decks, the rollers are not perpendicular to the arch, resulting in reduced pressure and a smaller displacement sensed by the displacement sensor, further impacting accuracy. Furthermore, when using displacement sensors on arched bridge decks or road surfaces, the displacement is constantly changing, making it difficult to determine changes in flatness.

[0007] Therefore, a new type of highway bridge smoothness testing equipment can be used to address the shortcomings of existing technologies. Summary of the Invention

[0008] The purpose of this invention is to solve the problems of inaccurate detection and inapplicability to arched bridge decks and road surfaces in the existing technology, and to propose a highway bridge smoothness detection device.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A highway bridge smoothness testing device includes a vehicle, a testing component and a sensing and control component mounted on the vehicle;

[0011] The vehicle includes a trailer frame, on which guide wheels are rotatably mounted, and two counterweight boxes are fixedly mounted. Two drive wheels are mounted on the trailer frame for driving the trailer frame to move. A stability adjustment component is installed in the middle of the trailer frame.

[0012] The detection assembly consists of multiple pressure sensing mechanisms. Each pressure sensing mechanism comprises a rotating frame, a wheel frame, and two detection wheels rotatably mounted on the wheel frame. The pressure sensing mechanism also includes a pressure sensor. The pressure sensor is fixedly connected to the rotating frame. An elastic telescopic rod is installed between the wheel frame and the pressure sensor. The elastic telescopic rod is fixedly connected to the wheel frame and rotatably connected to the pressure sensor. An angle adjustment structure is installed between the elastic telescopic rod and the rotating frame. A leveling adjustment structure and a pressure adjustment structure are installed between the rotating frame and the trailer frame.

[0013] Preferably, the sensing and control component consists of a first angle sensor and a control module. The first angle sensor is used to detect the horizontal tilt angle of the trailer frame, and the control module controls the operation of the leveling adjustment structure.

[0014] Preferably, the stability adjustment assembly includes two shock absorbers fixedly installed on the trailer frame, and a bracket is fixedly installed on both shock absorbers. A rotating shaft is rotatably installed on the bracket, and a stability adjustment wheel is fixedly installed at both ends of the rotating shaft. Two pneumatic telescopic rods are installed between the trailer frame and the bracket, and the pneumatic telescopic rods are rotatably connected to both the trailer frame and the bracket.

[0015] Preferably, a mounting bracket is fixedly installed on the trailer frame, an adjusting rod is slidably installed on the mounting bracket, the adjusting rod is fixed to the mounting bracket by a bolt, a support plate is rotatably installed on the adjusting rod, a drive motor is fixedly installed on the support plate, the drive end of the drive motor is fixedly connected to the drive wheel, and a second angle sensor is fixedly installed on the trailer frame to monitor the deflection angle of the support plate.

[0016] Preferably, the angle adjustment structure includes a fixed frame fixedly installed on multiple rotating frames, a guide rod slidably installed on each fixed frame, a rack fixedly installed between two adjacent guide rods, a gear meshing with the corresponding rack fixedly installed on each elastic telescopic rod, and an electric actuator fixedly installed on one of the fixed frames, the telescopic end of the electric actuator being fixedly connected to one of the racks via a connecting block.

[0017] Preferably, the levelness adjustment structure includes a telescopic frame, a connecting frame is fixedly installed at the telescopic end of the telescopic frame, the connecting frame and the rotating frame are rotatably connected by a shaft, the shaft is fixedly connected to the rotating frame and rotatably connected to the connecting frame, a servo motor is fixedly installed on the rotating frame, and the drive end of the servo motor is fixedly connected to the shaft.

[0018] Preferably, the pressure regulating structure includes multiple hydraulic rods fixedly installed on the trailer frame, and the telescopic ends of the multiple hydraulic rods are jointly fixedly installed on a mounting plate, with each telescopic frame and the mounting plate being fixedly connected.

[0019] Preferably, the trailer frame is equipped with a sensor for monitoring the speed of the drive wheels, which works in conjunction with an electric actuator to change the deflection angle of the detection wheel according to the speed difference between the two drive wheels.

[0020] Preferably, the guide wheel adopts a swivel wheel design, and a lifting module is installed between the guide wheel and the trailer frame to change the height of the trailer frame.

[0021] Preferably, an electrically controlled locking module is installed between the shaft and the connecting frame, which works in conjunction with the servo motor to lock the shaft when the servo motor stops operating and to release the lock when the servo motor operates.

[0022] Compared with existing technologies, the advantages of this invention are:

[0023] 1. When testing the smoothness of a road surface or bridge deck, this highway bridge smoothness testing equipment uses an angle adjustment structure to change the deflection angle of the testing wheel. Combined with sensors monitoring the drive wheels, it determines whether the trailer frame is traveling in a straight line based on the speed difference between the two drive wheels. At curves, the testing wheel rotates along the tangent of the trailer frame's arc, preventing lateral friction between the testing wheel and the ground and thus avoiding additional pressure on the elastic telescopic rod, resulting in more accurate pressure testing.

[0024] 2. When this highway bridge smoothness testing equipment tests the smoothness of road surfaces or bridge decks, the stability adjustment component changes the distance between the stability adjustment wheel and the ground when testing arched or sloping road surfaces and bridge decks, ensuring that the stability adjustment wheel is in contact with the ground and provides support. In conjunction with the guide wheel and drive wheel, it forms a multi-wheel support, which has higher stability. At the same time, maintaining multi-wheel support can stabilize tire pressure and reduce the impact of unstable tire pressure on the test.

[0025] 3. When testing the smoothness of road or bridge surfaces, this highway bridge smoothness testing equipment uses a pressure adjustment structure to change the distance between the testing wheel and the trailer frame, thereby adapting to road and bridge surfaces with different curvatures. Furthermore, when testing road and bridge surfaces with constant curvatures, it ensures that the pressure sensor's detection pressure remains constant in the initial stage of testing, which makes it easier to analyze the pressure values ​​detected by the pressure sensor.

[0026] 4. When this highway bridge smoothness testing equipment tests the smoothness of the road surface or bridge deck, it uses a leveling adjustment structure to change the angle between the elastic telescopic rod and the road surface or bridge deck. Before entering the arched road surface or bridge deck, the trailer frame tilts, and the elastic telescopic rod will also tilt with the trailer frame. This will increase the friction when the elastic telescopic rod extends and retracts, which will reduce the pressure value collected by the pressure sensor. Therefore, the leveling adjustment structure is used to adjust the elastic telescopic rod to ensure that the elastic telescopic rod remains perpendicular to the ground, which can effectively improve the pressure sensing accuracy of the pressure sensor. Attached Figure Description

[0027] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0028] Figure 1 This is a schematic diagram of the structure of a highway bridge smoothness testing device proposed in this invention;

[0029] Figure 2 for Figure 1 Detailed schematic diagram of the structure after rotation at a certain angle;

[0030] Figure 3 for Figure 2 Detailed schematic diagram of the structure after rotation at a certain angle;

[0031] Figure 4 for Figure 1 Detailed schematic diagram of the frontal planar structure;

[0032] Figure 5 for Figure 2 Detailed schematic diagram of the structure after removing the sensing and control components and the detection components;

[0033] Figure 6 for Figure 5 Enlarged schematic diagram of the stability adjustment wheel and its surrounding components;

[0034] Figure 7 for Figure 6 Detailed schematic diagram of the structure after rotation at a certain angle;

[0035] Figure 8 for Figure 5 Enlarged schematic diagram of the drive wheel and its surrounding components;

[0036] Figure 9 for Figure 8 A detailed enlarged schematic diagram of one of the drive wheels, drive motors, mounting brackets, and adjusting rods;

[0037] Figure 10 for Figure 1 Enlarged structural schematic diagram of the mid-trailer frame, counterweight box, sensor control components, and detection components;

[0038] Figure 11 for Figure 10 Detailed schematic diagram of the enlarged structure of the sensor control component;

[0039] Figure 12 for Figure 10 Detailed schematic diagram of the magnified structure of the detection component;

[0040] Figure 13 for Figure 12 Detailed schematic diagram of the structure after rotation at a certain angle;

[0041] Figure 14 for Figure 13 Detailed enlarged structural diagram of section A;

[0042] Figure 15 for Figure 13 Detailed schematic diagram of the enlarged structure of the medium pressure sensing mechanism;

[0043] Figure 16 for Figure 15 Detailed schematic diagram of the side view of the planar structure.

[0044] In the diagram: 1 Trailer frame, 2 Guide wheel, 3 Counterweight box, 4 Stability adjustment wheel, 5 Drive wheel, 6 Sensor control assembly, 7 Detection assembly, 8 Shock absorber, 9 Pneumatic telescopic rod, 10 Drive motor, 11 Mounting bracket, 12 Adjusting rod, 13 Control module, 14 First angle sensor, 15 Hydraulic rod, 16 Mounting plate, 17 Pressure sensing mechanism, 18 Electric actuator, 19 Fixing bracket, 20 Guide rod, 21 Rack, 22 Connecting block, 23 Detection wheel, 24 Elastic telescopic rod, 25 Gear, 26 Pressure sensor, 27 Telescopic frame, 28 Connecting frame, 29 Servo motor, 30 Wheel frame, 31 Rotating frame. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] Example 1: Refer to Figures 1-9 A highway bridge smoothness testing device includes a carrier, a testing component 7 and a sensing and control component 6 installed on the carrier;

[0047] The vehicle includes a trailer frame 1, on which guide wheels 2 are rotatably mounted, and two counterweight boxes 3 are fixedly mounted on the trailer frame 1. Two drive wheels 5 are mounted on the trailer frame 1 for driving the trailer frame 1 to move. A stability adjustment component is installed in the middle of the trailer frame 1.

[0048] The trailer frame 1 is attached to the rear of the towing vehicle, and the towing vehicle is used to move the trailer frame 1.

[0049] The counterweight box 3 contains counterweight blocks. The heavier the counterweight, the higher the stability. The maximum counterweight is applied within an appropriate range.

[0050] The stability adjustment assembly includes two shock absorbers 8 fixedly installed on the trailer frame 1. A bracket is fixedly installed on both shock absorbers 8. A rotating shaft is rotatably installed on the bracket. A stability adjustment wheel 4 is fixedly installed at both ends of the rotating shaft. Two pneumatic telescopic rods 9 are installed between the trailer frame 1 and the bracket. The pneumatic telescopic rods 9 are rotatably connected to both the trailer frame 1 and the bracket.

[0051] Since the guide wheel 2 and drive wheel 5 are located at the front and rear ends of the trailer frame 1 respectively, and the number of counterweights in the counterweight box 3 is fixed, once the trailer frame 1 tilts, the downward pressure of the counterweights on the trailer frame 1 decreases. This will cause the tire pressure of the guide wheel 2 and drive wheel 5 to decrease, and the trailer frame 1 to rise. In order to reduce the amount of lifting of the trailer frame 1, the stability adjustment wheel 4 is used to provide five-point support for the trailer frame 1. This increases the number of support points, reduces the force on each wheel, reduces the tire pressure change, and reduces the amount of lifting of the trailer frame 1. In addition, the five-point support is more stable than the three-point support. When the trailer frame 1 moves, the vibration arc is smaller, and the inspection is more accurate.

[0052] A mounting bracket 11 is fixedly installed on the trailer frame 1. An adjusting rod 12 is slidably installed on the mounting bracket 11. The adjusting rod 12 is fixed to the mounting bracket 11 by a bolt. A support plate is rotatably installed on the adjusting rod 12. A drive motor 10 is fixedly installed on the support plate. The drive end of the drive motor 10 is fixedly connected to the drive wheel 5. A second angle sensor is fixedly installed on the trailer frame 1 to monitor the deflection angle of the support plate. After entering the bend, the rotation speeds of the two drive wheels 5 are inconsistent. Therefore, under the action of friction with the ground, the deflection angles of the two drive wheels 5 will have a certain degree of deviation. This can effectively reduce friction and reduce the amplitude of friction vibration, which promotes the detection accuracy.

[0053] The purpose of the drive motor 10 is to drive the drive wheel 5 to rotate, rather than to drive the drive wheel 5 to roll by towing the motor vehicle. When traveling in a straight line, the driving speed of the drive wheel 5 is the same as the speed of the towing motor vehicle, so that the trailer frame 1 has independent drive and higher stability.

[0054] The guide wheel 2 adopts a swivel wheel design, and a lifting module is installed between the guide wheel 2 and the trailer frame 1 to change the height of the trailer frame 1.

[0055] The distance between the trailer frame 1 and the drive wheel 5 is changed by adjusting the position of the bolt, and the distance between the guide wheel 2 and the trailer frame 1 is adjusted by the lifting module, thereby changing the height of the trailer frame 1. The height of the trailer frame 1 is determined according to the speed at which the trailer frame 1 moves during the test. The faster the speed, the lower the trailer frame 1 is, and the slower the speed, the higher the trailer frame 1 is. This ensures that the trailer frame 1 moves stably and reduces the probability of the trailer frame 1 shaking.

[0056] Example 2: This example differs from Example 1 in that: (Refer to...) Figures 10-16 The detection component 7 consists of multiple pressure sensing mechanisms 17. Each pressure sensing mechanism 17 consists of a rotating frame 31, a wheel frame 30, and two detection wheels 23 rotatably mounted on the wheel frame 30. The pressure sensing mechanism 17 also includes a pressure sensor 26, which is fixedly connected to the rotating frame 31.

[0057] An elastic telescopic rod 24 is installed between the wheel frame 30 and the pressure sensor 26. The elastic telescopic rod 24 is fixedly connected to the wheel frame 30 and rotatably connected to the pressure sensor 26. The pressure sensor 26 is used to detect and collect the change in the reaction force of the elastic telescopic rod 24 on the pressure sensor 26. An angle adjustment structure is installed between the elastic telescopic rod 24 and the rotating frame 31 to change the rotation angle of the detection wheel 23.

[0058] During testing, the detection wheel 23 is in contact with the ground. If the ground is uneven, the detection wheel 23 will move up and down, thereby causing the elastic telescopic rod 24 to extend and retract. The extension and retraction of the elastic telescopic rod 24 will generate a reaction force on the pressure sensor 26, pressing against the pressure sensor 26. At this time, the pressure sensor 26 will collect and store the pressure data.

[0059] The angle adjustment structure includes a fixed frame 19 fixedly mounted on multiple rotating frames 31. Each fixed frame 19 has a guide rod 20 slidably mounted on it. A rack 21 is fixedly mounted between two adjacent guide rods 20. Each elastic telescopic rod 24 has a gear 25 fixedly mounted on it that meshes with the corresponding rack 21. An electric push rod 18 is fixedly mounted on one of the fixed frames 19. The telescopic end of the electric push rod 18 is fixedly connected to one of the racks 21 through a connecting block 22.

[0060] When entering the turning phase, the trailer frame 1 does not move in a straight line. Therefore, the detection wheel 23 not only rolls along the forward direction of the trailer frame 1, but also moves laterally. The lateral movement will generate a large friction force with the ground. At this time, the friction force will affect the pressure sensor 26. Therefore, it is necessary to change the angle of the detection wheel 23 so that the detection wheel 23 rolls along the tangent direction of the turn. This way, it can not only move forward, but also compensate for the lateral movement, effectively avoiding the influence of friction.

[0061] The trailer frame 1 is equipped with a sensor for monitoring the rotational speed of the drive wheels 5. In conjunction with the electric push rod 18, the sensor changes the deflection angle of the detection wheel 23 according to the speed difference between the two drive wheels 5.

[0062] Because the two drive wheels 5 rotate at different speeds when turning, it is necessary to monitor the speed of the two drive wheels 5 through sensors and adjust the rotation angle of the detection wheel 23 according to the speed to ensure that the detection wheel 23 is along the tangent of the curve. When turning, the entire trailer frame 1 will rotate around one of the stability adjustment wheels 4, and the adjusted rotation angle of the detection wheel 23 is also the angle of rotation with the stability adjustment wheel 4 as the fulcrum.

[0063] Specific operation: The electric push rod 18 extends and retracts according to the data transmitted by the sensor, which drives the connecting block 22 to move. The movement of the connecting block 22 drives the rack 21 fixedly connected to it to move. Under the action of the guide rod 20, all racks 21 move, thereby driving the corresponding gears 25 to rotate. The rotation angles of all gears 25 are not consistent (because the fulcrum is constant, all detection wheels 23 are located on the same arc of the fulcrum, and all detection wheels 23 are on the same straight line, but not on the same straight line as the fulcrum, so the rotation angles of all detection wheels 23 are not consistent. This is achieved by setting the gear ratio of gears 25 and racks 21. The closer the detection wheel 23 is to the fulcrum, the smaller its rotation angle). The rotation of gears 25 drives the elastic telescopic rod 24 to rotate, thereby driving the detection wheel 23 to rotate through the wheel frame 30, thus changing the angle of the detection wheel 23.

[0064] A leveling adjustment structure and a pressure adjustment structure are installed between the rotating frame 31 and the trailer frame 1 to change the angle between the detection wheel 23 and the road surface;

[0065] The leveling adjustment structure includes a telescopic frame 27, a connecting frame 28 is fixedly installed at the telescopic end of the telescopic frame 27, the connecting frame 28 is rotatably connected to the rotating frame 31 through a shaft, the shaft is fixedly connected to the rotating frame 31, and the shaft is rotatably connected to the connecting frame 28. A servo motor 29 is fixedly installed on the rotating frame 31, and the drive end of the servo motor 29 is fixedly connected to the shaft.

[0066] Before entering the arched road surface or bridge deck, the trailer frame 1 tilts, and the elastic telescopic rod 24 also tilts with the trailer frame 1. This will increase the friction force when the elastic telescopic rod 24 extends and retracts, which will reduce the pressure value collected by the pressure sensor. Therefore, the elastic telescopic rod 24 is adjusted by the level adjustment structure to ensure that the elastic telescopic rod 24 remains perpendicular to the ground. This can effectively improve the pressure sensing accuracy of the pressure sensor 26.

[0067] The sensing and control component 6 consists of a first angle sensor 14 and a control module 13. The first angle sensor 14 is used to detect the horizontal tilt angle of the trailer frame 1 and to control the operation of the level adjustment structure through the control module 13.

[0068] There is a signal transmission channel between the servo motor 29 and the control module 13. The first angle sensor 14 on the control module 13 will detect the tilt angle of the trailer frame 1 and then transmit the signal to the servo motor 29. The operation of the servo motor 29 drives the rotating frame 31 to rotate, thereby changing the angle between the pressure sensor 26 and the ground to ensure that the angle is 90 degrees.

[0069] An electrically controlled locking module is installed between the shaft and the connecting frame 28. It works in conjunction with the servo motor 29 to lock the shaft when the servo motor 29 stops operating and to release the lock on the shaft when the servo motor 29 operates.

[0070] A controller is installed between the electronic locking module and the servo motor 29. The two operate alternately. The electronic locking module locks the rotating frame 31, thus preventing the torque of the rotating frame 31 when it is stationary from being transmitted to the drive end of the servo motor 29, thereby protecting the servo motor 29.

[0071] The pressure regulating structure includes multiple hydraulic rods 15 fixedly installed on the trailer frame 1. The telescopic ends of the multiple hydraulic rods 15 are jointly fixedly installed on a mounting plate 16. Each telescopic frame 27 is fixedly connected to the mounting plate 16. A three-dimensional scanner is installed on the trailer frame 1 to scan the general condition of the road surface and load data.

[0072] For road surfaces or bridge decks with different arches, if the arch curvature is consistent, then during testing, it is sufficient to keep the pressure sensor 26 at a constant height.

[0073] If the curvature of the arch changes, keeping the pressure sensor 26 at the same height will cause the pressure value on the pressure sensor 26 to change. At this time, it is impossible to determine whether the road surface is uneven or arched based on the pressure value. Therefore, it is necessary to scan the road surface according to the real-time road surface conditions and adjust the position of the pressure sensor 26 according to the road surface conditions to ensure that the distance between the pressure sensor 26 and the ground is constant.

[0074] By setting a pressure adjustment structure to change the distance between the detection wheel 23 and the trailer frame 1, it can adapt to road surfaces and bridge surfaces with different curvatures. In addition, when detecting road surfaces and bridge surfaces with constant curvatures, it ensures that the pressure detected by the pressure sensor 26 is constant in the initial stage of detection (the distance between the pressure sensor 26 and the ground is constant), which makes it easier to analyze the pressure value detected by the pressure sensor 26.

[0075] The specific operating steps of this device are as follows:

[0076] Attach trailer frame 1 to the rear of the towing vehicle, then activate pneumatic telescopic rod 9 and adjust the position of stability adjustment wheel 4 so that guide wheel 2, drive wheel 5 and stability adjustment wheel 4 are all in contact with the ground;

[0077] Next, the pneumatic traction vehicle and drive motor 10 will drive the trailer frame 1 to move. During the movement, when encountering uneven road surfaces, the detection wheel 23 will undulate. At this time, the pressure value on the pressure sensor 26 will change, thereby judging the smoothness of the road surface.

[0078] Upon entering the turning area, the electric actuator 18 is activated. The electric actuator 18 extends and retracts according to the data transmitted by the sensor, which drives the connecting block 22 to move. The movement of the connecting block 22 drives the rack 21 fixedly connected to it to move. Under the action of the guide rod 20, all racks 21 move, thereby driving the corresponding gears 25 to rotate. The rotation of gears 25 drives the elastic telescopic rod 24 to rotate, which in turn drives the detection wheel 23 to rotate through the wheel frame 30, thus changing the angle of the detection wheel 23.

[0079] For arched road surfaces or bridge surfaces: it is necessary to ensure that the pressure sensor 26 is perpendicular to the ground. At this time, the servo motor 29 operates, which will drive the rotating frame 31 to rotate, thereby changing the angle between the pressure sensor 26 and the ground.

[0080] Because the curvature of the arched road surface or bridge deck is different, it is necessary to adjust the height of the pressure sensor 26 to adapt it: the road surface is scanned according to the real-time road surface conditions, and the position of the pressure sensor 26 is adjusted according to the road surface conditions to ensure that the distance between the pressure sensor 26 and the ground is constant. The pneumatic hydraulic rod 15 will drive the mounting plate 16 to move, thereby driving the telescopic frame 27 to move. The telescopic frame 27 will drive the pressure sensor 26 to move, thereby achieving the purpose of adjusting the height of the pressure sensor 26.

[0081] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A highway bridge smoothness testing device, comprising a carrier, characterized in that, It also includes a detection component (7) installed on the vehicle and a sensing control component (6); The vehicle includes a trailer frame (1), a guide wheel (2) is rotatably mounted on the trailer frame (1), and two counterweight boxes (3) are fixedly mounted on the trailer frame (1). Two drive wheels (5) are mounted on the trailer frame (1) for driving the trailer frame (1) to move. A stability adjustment component is installed in the middle of the trailer frame (1). The detection component (7) consists of multiple pressure sensing mechanisms (17). Each pressure sensing mechanism (17) consists of a rotating frame (31), a wheel frame (30), and two detection wheels (23) rotatably mounted on the wheel frame (30). The pressure sensing mechanism (17) also includes a pressure sensor (26). The pressure sensor (26) is fixedly connected to the rotating frame (31). An elastic telescopic rod (24) is installed between the wheel frame (30) and the pressure sensor (26). The elastic telescopic rod (24) is fixedly connected to the wheel frame (30) and rotatably connected to the pressure sensor (26). An angle adjustment structure is installed between the elastic telescopic rod (24) and the rotating frame (31). A level adjustment structure and a pressure adjustment structure are installed between the rotating frame (31) and the trailer frame (1). The angle adjustment structure includes a fixed frame (19) fixedly installed on multiple rotating frames (31), a guide rod (20) is slidably installed on each fixed frame (19), a rack (21) is fixedly installed between two adjacent guide rods (20), a gear (25) meshing with the corresponding rack (21) is fixedly installed on each elastic telescopic rod (24), and an electric push rod (18) is fixedly installed on one of the fixed frames (19), and the telescopic end of the electric push rod (18) is fixedly connected to one of the racks (21) through a connecting block (22); The trailer frame (1) is equipped with a sensor for monitoring the rotational speed of the drive wheel (5), which works in conjunction with the electric push rod (18) to change the deflection angle of the detection wheel (23) according to the speed difference between the two drive wheels (5).

2. The highway bridge smoothness testing equipment according to claim 1, characterized in that, The sensing and control component (6) consists of a first angle sensor (14) and a control module (13). The first angle sensor (14) is used to detect the horizontal tilt angle of the trailer frame (1) and control the operation of the level adjustment structure through the control module (13).

3. The highway bridge smoothness testing equipment according to claim 1, characterized in that, The stability adjustment assembly includes two shock absorbers (8) fixedly installed on the trailer frame (1). A bracket is fixedly installed on both shock absorbers (8). A rotating shaft is rotatably installed on the bracket. A stability adjustment wheel (4) is fixedly installed at both ends of the rotating shaft. Two pneumatic telescopic rods (9) are installed between the trailer frame (1) and the bracket. The pneumatic telescopic rods (9) are rotatably connected to the trailer frame (1) and the bracket.

4. The highway bridge smoothness testing equipment according to claim 1, characterized in that, A mounting bracket (11) is fixedly installed on the trailer frame (1). An adjusting rod (12) is slidably installed on the mounting bracket (11). The adjusting rod (12) is fixed to the mounting bracket (11) by a bolt. A support plate is rotatably installed on the adjusting rod (12). A drive motor (10) is fixedly installed on the support plate. The drive end of the drive motor (10) is fixedly connected to the drive wheel (5). A second angle sensor is fixedly installed on the trailer frame (1) to monitor the deflection angle of the support plate.

5. The highway bridge smoothness testing equipment according to claim 1, characterized in that, The leveling adjustment structure includes a telescopic frame (27), and a connecting frame (28) is fixedly installed at the telescopic end of the telescopic frame (27). The connecting frame (28) and the rotating frame (31) are rotatably connected by a shaft. The shaft is fixedly connected to the rotating frame (31) and rotatably connected to the connecting frame (28). A servo motor (29) is fixedly installed on the rotating frame (31), and the drive end of the servo motor (29) is fixedly connected to the shaft.

6. The highway bridge smoothness testing equipment according to claim 1, characterized in that, The pressure regulating structure includes multiple hydraulic rods (15) fixedly installed on the trailer frame (1). The telescopic ends of the multiple hydraulic rods (15) are fixedly installed on a mounting plate (16). Each telescopic frame (27) is fixedly connected to the mounting plate (16).

7. The highway bridge smoothness testing equipment according to claim 1, characterized in that, The guide wheel (2) adopts a universal wheel design, and a lifting module is installed between the guide wheel (2) and the trailer frame (1) to change the height of the trailer frame (1).

8. The highway bridge smoothness testing equipment according to claim 5, characterized in that, An electronically controlled locking module is installed between the shaft and the connecting frame (28), which works in conjunction with the servo motor (29) to lock the shaft when the servo motor (29) stops operating, and to release the lock on the shaft when the servo motor (29) is operating.

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